Kevin made cookies and brownies for the bake sale at school. He made 12 more cookies than brownies. He sold cookies for $1.50 and brownies for $2. He sold all of his food and made a total of $123. How many of each item did he sell? *

Answers

Answer 1

Answer:

He made 42 cookies and 30 brownies.

Step-by-step explanation:

Let c = number of cookies

Let b = number of brownies

"He made 12 more cookies than brownies."

The number of cookies is 12 more than the number of brownies.

c = b + 12

"He sold cookies for $1.50 and brownies for $2."

The money he made from selling cookies was 1.5c.

The money he made from selling brownies was 2b.

The total sales were $123

1.5c + 2b = 123

We have a system of equations.

c = b + 12

1.5c + 2b = 123

Substitute c of the second equation with b + 12

1.5(b + 12) + 2b = 123

1.5b + 18 + 2b = 123

3.5b = 105

b = 30

c = b + 12

c = 30 + 12

c = 42

He made 42 cookies and 30 brownies.


Related Questions

Please answer correctly !!!!!!! Will mark brainliest !!!!!!!!!!

Answers

Answer:

3

Step-by-step explanation:

The degree of the given POLYNOMIAL is 3.

Because highest power is 3.

Step-by-step explanation:

3

highest power of the coefficient is 3


In standard notation, 208.06 is written as

Answers

Answer:

208.06

Step-by-step explanation:

208.06 is already in standard notation. If you were talking about scientific notation, it would be 2.0806×10².

jean jogs 2/3 km at 12 km and then walks 1 1/3 km at 8km/h.Find her average for the whole journey.

Answers

Answer:80mi/hr * 3.5hrs

Francesca has a garden at home. She has 3 rows of tomato with 8 plants . She also have 5 rows of zucchini plants with 6 plants in each row. Write a numerical expression for the total number of plants in Francesca garden

Answers

Answer:

54 plants

Step-by-step explanation:

3rows of tomatoes with 8 plants each

=3×8=24

5 rows of zucchini plants with 6 plants each

=5×6

=30

Total number of plants in Francesca garden

=24 tomatoes+30 zucchini

=54 plants

I need help ASAP can someone please help me right away​.​

Answers

Answer:

60 degrees.

Step-by-step explanation:

We know that we can rotate the image by a total of 360 degrees until we reach the original point again.

To rotate the image to a point where the image looks the same, we need to take a look at how we can do this. We want to line up the image with the gap between the two white semicircles. There are a total of 6 of these gaps:

360/6 = 60 degree rotations will make the image the same.

I hope this helps!

Brainliest question 100 PTS: please please help me now plz and plz give the right answer

Answers

Answer:

inside the circle

Step-by-step explanation:

The radius is sqrt(38)

The distance from the center to the point is

d = sqrt( ( y2-y1) ^2 + ( x2 -x1) ^2)

   = sqrt( ( 1 - 0)^2 + ( 6 - 0 ) ^2)

   = sqrt( (1^2 + 6^2)

   = sqrt( 1+36)

  = sqrt(37)

This is less than the radius so the point is inside the circle

Answer: its number A

Step-by-step explanation:

Place the digits 1 through 9 in the nine
squares to form a correct addition. Can
this be done in more than one way?​

Answers

Answer:

There lots of possible ways: here are some answers

219 + 348 = 567

218 + 349 = 567

129 + 357 = 486

127 + 359 = 486

271 + 593 =864

128 + 367 = 495

281 + 673 = 954

127 + 368 = 495

271 + 683 = 954

there are  more answers....

Hope this helps

The average number of acres burned by forest and range fires in a county is 4,500 acres per year, with a standard deviation of 780 acres. The distribution of the number of acres burned is normal. What is the probability that between 3,000 and 4,800 acres will be burned in any given year? Round your answer to four decimal places.

Answers

Answer:

0.6206

Step-by-step explanation:

We would be using the Z score probability to answer this question

The formula to find the is given as :

is z = (x-μ)/σ,

x = observed value

μ = mean or average value

σ = Standard deviation

To find the probability that between 3,000 and 4,800 acres will be burned in any given year

Step 1

Find the probability that that between 3,000 will be burned in any given year

z = (x-μ)/σ,

x = observed value = 3000

μ = mean or average value = 4500

σ = Standard deviation = 780

z = (3000- 4500)/780

z = -1.92308

Step 2

Find the probability that that between 4,800 will be burned in any given year

z = (x-μ)/σ,

x = observed value = 4800

μ = mean or average value = 4500

σ = Standard deviation = 780

z = (4800- 4500)/780

z =0.38462

Step 3

Using the Z score normal distribution table:

= P(Z <0.38462) - P(Z < - 1.92308)

= P(-1.92308 < Z < 0.38462)

Using the Z score normal distribution table:

P(z) -1.92308 = 0.02743

P(z) 0.38462 = 0.64803

Therefore, the probability that between 3,000 and 4,800 acres will be burned in any given year

0.64803 - 0.02743

= 0.6206

Answer: 0.6225

Step-by-step explanation:

$P\left(3,000<X<4,800\right)=0.6225

The mean is μ=4500 and the standard deviation is σ=780. Because the probability between two values is to be calculated, subtract the probability of the lower value from the higher value. In this case, you have to use the NORMDIST function twice.

1. Open Excel and click on any empty cell. Click Insert function, fx.

2. Search for NORMDIST in the search for a function dialog box and click GO.

3. Make sure NORMDIST is on top in select a function. Then click OK.

4. In the function arguments of the NORMDIST function, enter 4800 for X, 4500 for mean, 780 for Standard_dev, and TRUE for Cumulative, all for the higher value of X. Thus, the answer, rounded to four decimal places, is 0.6497.

5. Click on any other empty cell. Click Insert function, fx.

6. Search for NORMDIST in the search for a function dialog box and click GO.

7. Make sure NORMDIST is on top in select a function. Then click OK.

8. In the function arguments of the NORMDIST function, enter 3000 for X, 4500 for mean, 780 for Standard_dev, and TRUE for Cumulative, all for the lower value of X. Thus, the answer, rounded to four decimal places, is 0.0272.

Now subtract: 0.6497−0.0272=0.6225. Thus, the probability that between 3,000 and 4,800 acres will be burned in any given year is 0.6225.

A unicycle wheel has a diameter of 20 inches. How many inches will the unicycle travel in 8 revolutions? Use π = 3.14 and round your answer to the nearest hundredth of an inch.

Answers

Answer:

502.40 inches

Step-by-step explanation:

First we need to find the circumference of the wheel, which is given by pi times the diameter:

C = (3.14)(20) = 62.8 inches

That's how far the unicycle will travel in 1 revolution, so from there just multiply by 8

D = (62.8)(8) = 502.40 inches

The unicycle travel 502 inches in 8 revolutions

What is a circumference of a circle?

The circumference is the perimeter of a circle. That is, the circumference would be the arc length of the circle, as if it were opened up and straightened out to a line segment.

Given that, a unicycle wheel has a diameter of 20 inches.

To find that how many inches will the unicycle travel in 8 revolutions, we will multiply the circumference to the asked number of revolutions.

Circumference = π × diameter

= 3.14 × 20 = 62.8 inches

The unicycle travel in 8 revolutions = 62.8 × 8 = 502.4 inches

In nearest hundred = 502 inches

Hence, the unicycle travel 502 inches in 8 revolutions

For more references on circumference, click;

https://brainly.com/question/28757341

#SPJ5

The volume of a cylinder is 180 cubed meters. What is the volume of a cone with the same radius and height as the cylinder?

Answers

Answer:

60 cubic meters will be the volume of such cone.

Step-by-step explanation:

Formula for volume of a cylinder:

[tex]V = \pi r^{2} h ...... (1)[/tex]

Where [tex]r[/tex] is the radius of base of cylinder

and [tex]h[/tex] is the height of cylinder

V = 180 cubic meters

Formula for volume of a cone:

[tex]V' = \dfrac{1}{3}\pi R^{2} H ...... (2)[/tex]

Where [tex]R[/tex] is the radius of base of cone

and [tex]H[/tex] is the height of cone

Now, it is given that height and radius of cone are equal.

[tex]r = R\\h =H[/tex]

Putting the values in equation (2):

[tex]V' = \dfrac{1}{3}\pi r^{2} h[/tex]

Using equation (1):

[tex]V' = \dfrac{1}{3} \times V[/tex]

Putting V = 180 cubic meters

[tex]\Rightarrow V' = \dfrac{1}{3} \times 180\\\Rightarrow V'=60 \text { cubic meters}[/tex]

Hence, 60 cubic meters will be the volume of such cone.

Describe each polynomial expression:

use example form ^^

Answers

Answer:

1) It is a qiadratic binomial which has 3 as coefficient on the quadratic term and 2 as the coefficient on the linear term

2) It is a quadratic trinomial which has 2 as coefficient in the quadratic term , -5 as the coefficient in the linear term & 3 as the coefficient of the constant term

3) It is a linear polynomial with no constant term and is a monomial ....it has 6 as coefficient in the linear term

Hy it

Use the work shown below to solve.

The solution is k =

À Ý

N 0

1. Identify the operation in the equation.

2. Use inverse operations to solve.

Subtraction property of equality

3/8 = k + 11

3/2 - 1 1 2 = k + 11 2 - 17

- Addition property of equality

§ + (-2) =k+ 11 + (-1)

Nola

Answers

Answer:

-4

Step-by-step explanation:

i just did it..

Answer:

The correct answer is -4

Step-by-step explanation:

I hope this helps you.

Decrease 220kg by 12.5%.

NEED HELPPP!

Answers

Hmm try 192.5 I think that’s right

Answer:

192.5 kg

Step-by-step explanation:

220-12.5%=220*(100-12.5)/100=220*0.875= 192.5 kg

150 + 900=
I'm just trying to figure out how this question asking works as I have only answered questions

Answers

Answer: 1050 is the answer? Do u need a calculator

Step-by-step explanation:

25t-13=-24t-30 for t

Answers

Answer:

t = -17/49

Step-by-step explanation:

25t-13=-24t-30

Add 24t to each side

25t+24t-13=-24t+24t-30

49t-13=-30

Add 13 to each side

49t-13+13=-30+13

49t = -17

Divide each side by 49

49t/49 = -17/49

t = -17/49

The right answer is - 17/49

please see the attached picture for full solution

Hope it helps

Good luck on your assignment

guys can u please help me out

Answers

Answer:

[tex]-0.36a^5x^6b^6[/tex]

Step-by-step explanation:

Ok first multiply the first two monomials:

[tex]-0.6a^3x^6b^3[/tex]

Then multiply THAT with the OTHER monomial:

[tex]-0.36a^5x^6b^6[/tex]

This should be the answer. Let me know if it's wrong.

The width of rectangle is 7 less than twice the length. If the perimeter of the rectangle is 43.6 inches, what is the area of the rectangle?

Answers

Answer:

29.49 square inches

Step-by-step explanation:

Let the length of the rectangle be x inches

Therefore, width = (2x - 7) inches

Perimeter of rectangle =2( length + width)

therefore,

43.6 = 2 ( x + 2x - 7)

43.6/2 = 2 ( 3x - 7)

21.8 = 6x - 14

21.8 + 14 = 6x

6x = 35.8

x = 35.8/6

x = 5.97 inches

Length = 5.97 inches

width = 2*5.97-7 =11.94 - 7 = 4. 94 inches

Area of rectangle

= Length * width

= 5.97*4.94

=29.4918

= 29.49 square inches

50 POINTS!! Are the sums rational or irrational?

Answers

Answer:

rational

irrational

  irrational

 rational

rational

irrational  

Step-by-step explanation:

sqrt(16) +  (-21/5) = 4 + (-21/5) = 4+(-4 1/5)= rational both can be written as fractions

pi +24  irrational  pi is irrational

sqrt(8) + pi = 2 sqrt(2) + pi   irrational because  both are irrational

sqrt(4) +5 = 2+5 = 7  rational

sqrt(36) + cuberoot(27) =6+3 = 9  rational

3/4+ sqrt(27) = 3/4 + 3sqrt(3) = irrational   sqrt(3) is irrational  

Answer:

rational

irrational

irrational

rational

rational

irrational  

Step-by-step explanation:

√16 = 4 is rational.

-21/5 is rational it can be expressed as a fraction.

[tex]\pi[/tex] is irrational.

√4 = 2 is rational.

5 is a rational number.

√36 = 6 is rational.

∛27 = 3 is rational.

3/4 is rational.

√27 is irrational.

Help on both questions please? Thank you!!!!

Answers

Answer:

1. 16

2. $21.27

Step-by-step explanation:

To get the tip money, ypu multiply 18.5 to 0.15 to get 2.775. We round it to 2.77. Add this to 18.5 to get $21.27 as the answer

16 and 21.27 are correct

Two shapes are shown below, one isosceles triangle and one rectangle. The dimensions can be represented by algebraic expressions, as shown in the diagram below. They both have the same area. Find the numerical value of the perimeter of the isosceles triangle. show full calculations please

Answers

Answer:

Perimeter of Isosceles Triangle = 16 units

Step-by-step explanation:

Area of rectangle is given by the formula;

Area = 1/2 × base × height

From the diagram, base = 6x - 6 and height = 6x - 8

Thus,Area = 1/2 × (6x - 6) × (6x - 8)

Area = (3x - 3)(6x - 8) = 18x² - 42x + 24

Secondly, area of rectangle is given by;

Area = length x breadth

So, area of rectangle in question = (6x - 9)(3x - 2) = 18x² - 39x + 18

We are told both the area of the triangle and the rectangle are the same, so let's equate both areas;

18x² - 42x + 24 = 18x² - 39x + 18

18x² will cancel out and rearranging, we have;

24 - 18 = 42x - 39x

6 = 3x

x = 6/3

x = 2

Plugging 2 for x for the height and base of the triangle, we have;

base = 6(2) - 6 and height = 6(2) - 8

Base = 6 and height = 4

So,let's find the slant height of the isosceles triangle.

Dividing the base by 2,we have; 6/2 = 3

So,using Pythagoras theorem, let the slant height be h, so we have;

h² = 3² + 4²

h² = 9 + 16

h² = 25

h = √25

h = 5

2 slant sides of isosceles triangle are the same. So perimeter = 5 + 5 + 6 = 16 units

Aisha and brendan are watching a hot air balloon. the angle of elevation for aisha is 65 degrees. what is the angle of elevation for brendan?

Answers

Answer:

The angle of elevation for Brendan is  40°

Step-by-step explanation:

To find the angle of elevation of Brendan, we will follow the steps below;

we can use the sine formula to find the angle of elevation of Brendan since we were given two sides and one angle

Using the sine rule;

[tex]\frac{sin A}{a}[/tex] = [tex]\frac{sin E}{e}[/tex]

From the diagram above, angle A = 65°     side a = 155 m   side e=110 m

angle E is what we are to find

we can now proceed to insert the values into the formula

[tex]\frac{sin 65}{155}[/tex]  =  [tex]\frac{sin E}{110}[/tex]

cross-multiply

155 sinE = 110 sin65°

Divide both-side of the equation by 155

sin E = 110 sin65° / 155

sin E =0.64319

Take the sin⁻¹  of both-side of the equation

sin⁻¹ sin E = sin⁻¹ (0.64319)

At the left-hand side of the equation sin⁻¹ will cancel-out sin leaving us with just E

E =  sin⁻¹ (0.64319)

E= 40°

The angle of elevation for Brendan is  40°

Aaron buys 2 t-shirts for $10.50 each, a 3-pack of socks for $7.95, what is the total cost of Aaron’s purchases?

Answers

Answer:

10.50+10.50+7.95=$28.95

The Answers is 28.95

1.)Mr. Williams weighs 300 pounds. He went on the Subway diet and was guaranteed to lose 5 pounds per week. Write an equation that could be used to find how many weeks, w, it would take for him to weigh 150 pounds.

How many weeks would it take?

2.)The total bill for repairing Troy’s car was $527.63. He paid $210 for parts and the rest of the bill was labor. The technicians that fixed his car charge $52 per hour. Write an equation that could be used to find, t, the length of time it took to fix the car.

How long did it take to get the car fixed?

3.)You have $60 and your sister has $120. You are saving $7 per week and she is saving $5 per week. How long will it take before you and your sister have the same amount of money? Write an equation and solve.(HINT: THIS PROBLEM SHOULD HAVE THE SAME VARIABLE ON BOTH SIDES)

what is the equation and solution ?


4.)SAT Prep If the length of a rectangular parking lot is 3 times its width and its perimeter is 840 yards, what is the length of the parking lot, in yards?


Answers

Answer:

Step-by-step explanation:

1)Since he can lose 5 pounds per week, this is a linear rate. The weight is decreasing in arithmetic progression. The formula for determining the nth term of an arithmetic progression is expressed as

Tn = a + (n - 1)d

n = number of terms(weeks)

d = common difference(5 pounds)

a= first term(300 pounds)

The equation that could be used to find how many weeks, w, it would take for him to weigh 150 pounds would be

150 = 300 + (w - 1)5

150 - 300 = 5w - 5

- 150 + 5 = 5w

w = 145/5 = 29 weeks

2) t represents the number of hours used to fix the car. The cost of t hours is 52t. Total amount paid is 210 + 52t. The equation that could be used to find, t, the length of time it took to fix the car is

210 + 52t = 527.23

3) 52t = 527.23 - 210 = 317.23

t = 317.23/52

t = 6 hours

3) Let x represent the time it will take before you and your sister have the same amount of money. The amount that you would have in x weeks is 60 + 7x

The amount that you sister will have in x weeks is 120 + 5x. The equation would be

60 + 7x = 120 + 5x

7x - 5x = 120 - 60

2x = 60

x = 60/2 = 30 weeks

4) let L represent the length of the parking lot.

let W represent the width of the parking lot.

If the length of a rectangular parking lot is 3 times its width, it means that

L = 3W

Its perimeter is 840 yards. It means that

2(L + W) = 840

L + W = 840/2 = 420

Substituting, it becomes

3W + W = 420

4W = 420

W = 420/4 = 105

L = 3 × 105 = 315

Length = 315 yards

On a coordinate plane, a v-shaped line crosses the x-axis at (negative 2, 0), the y-axis at (0, negative 2), and the x-axis at (2, 0). What is the domain of the function on the graph?

Answers

Answer:

b

Step-by-step explanation:

i did the test and I got the answer right here after being corrected so yah.

Answer:

All real numbers

Step-by-step explanation:

two integers have a sum of 2, and a difference of 12. find the two integers

Answers

Answer: The two integers are 7 and -5

==============================================================

Explanation:

Let x and y be the two integers where x > y.

The two integers have a sum of x+y and this is equal to 2, so x+y = 2. Solve for y to get y = -x+2

The two integers also have a difference of 12, so x-y = 12. Plug in y = -x+2 and solve for x

x-y = 12

x - ( y ) = 12

x - ( -x+2 )  = 12 ... replace y with -x+2

x + x - 2 = 12

2x - 2 = 12

2x - 2+2 = 12+2 .... adding 2 to both sides

2x = 14

2x/2 = 14/2 .... divide both sides by 2

x = 7

Use this x value to find y

y = -x+2

y = -7+2

y = -5

--------------------------------------

As a check,

x+y = 7+(-5) = 7-5 = 2 ... we get a sum of 2

x-y = 7-(-5) = 7+5 = 12 ... and get a difference of 12

the answers have been confirmed

Write the following numbers in order, starting from the smallest. [tex]5/11,[/tex] [tex]\sqrt{2},[/tex] [tex]45.4/100,[/tex] [tex]9/20[/tex]

Answers

Answer:

[tex]9/20,[/tex] [tex]45.4/100,[/tex] [tex]5/11,[/tex] [tex]\sqrt{2}[/tex]

Step-by-step explanation:

Convert the values into decimals.

[tex]5/11=0.45454545454[/tex]

[tex]\sqrt{2}=1.41421356237[/tex]

[tex]45.4/100=0.454[/tex]

[tex]9/20=0.45[/tex]

With decimals, it is especially important to understand place value.

[tex]0.45454545454, 1.41421356237, 0.454, 0.45[/tex]

Order from smallest to largest.

[tex]0.45, 0.454, 0.45454545454, 1.41421356237[/tex]

[tex]9/20,[/tex] [tex]45.4/100,[/tex] [tex]5/11,[/tex] [tex]\sqrt{2}[/tex]

the last question is confusing me ive done a and b put all my points in please help im confused 5 star rating and a thanks will also be included

Answers

Answer:

Step-by-step explanation:

a) negative correlation

b) diagram c

c) diagram b because its erm no correlation its scattered

PUT ME AS THE BRAINIEST

Find the perimeter and area of the composite shape...

Answers

Answer:

P = 30

A = 22

Step-by-step explanation:

Find perimeter first

P = 5 + 5 + 2 + 2 + 2 + 2 + 2 + 2 + 4 + 4

P = 10 + 12 + 8

P = 30

Now area

A = 2(5 * 2) + (2 * 1)

A = 2(10) + (2)

A = 20 + 2

A = 22

Answer:

Perimeter: 34

Area: 22

Step-by-step explanation:

You can split this diagram into 3 rectangles and then find the area and perimeter of each using the formula P=2l+2w and A=lw. Then add each answer up.

Neglecting air​ resistance, the distance s(t) in feet traveled by a freely falling object is given by the function s(t)=16t squared​, where t is time in seconds. The height of a certain tower is 986 feet. How long would it take an object to fall to the ground from the top of the​ building?

Answers

Answer: t = 7.85seconds

Step-by-step explanation:

Given that :

Height of tower = 986 Feets

Function s(t) = 16t^2

To find the time t 8 in Seconds taken for an object to fall to the ground from the top of the​ building

16t^2 = 986

t^2 = 986/16

t ^2 = 61.625

Take the square root of both sides

t = sqrt(61.625)

t = 7.85seconds

Answer:

7.85sec

Step-by-step explanation:

Given that,

s(t)=16t squared​, where t is time in seconds. The height of a certain tower is 986 feet.

s(t) = 16t²

so when s = 986feet

16t² = 986 feet

t² = 986 /  16

t² = 61.625

t = √61.625

t= 7.85 seconds

Please answer correctly !!!!!!! Will mark brainliest !!!!!!!!!!

Answers

Answer:

g(x)=[tex]-2x^{2}[/tex]+1

Step-by-step explanation:

Answer:

g(x) = (x +2)² + 1

Step-by-step explanation:

original function is moved 2 units to the left and 1 unit up so

g(x) = (x-(-2))²+1

g(x) = (x +2)² + 1

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Find the area of the shape shown below.4482 The second term of a geometric sequence is 17.5 and the third term is 122.5. What is the common ratio? What is the first term? What is logistic growth what are the square units? Write 3 multi-step equations on your own. Explain how you got the answers in words and show all your work. Which is a complete list of factors of each term in the expression 15 + 20 x? REALLY EASY!!! JUST CAN'T CHOOSE !!!! WILL GIVE BRAINLIEST!!!! AT LEAST TAKE A LOOK!!! ANSWER IF 100% SURE THO!!!Read the passage below.He comes,he comes,the Frost Spirit comesYou may trace his footsteps nowOn the naked woods and the blasted fields and thebrown hill's withered brow.He has smitten the leaves of the gray old treeswhere their pleasant green came forth,And the winds, which follow wherever he goes,have shaken them down to earth.What literary device does John Greenleaf Whittier use in this stanza?A) natureB) RomanticismC) personificationD) hyperbole Three Strings someone help How many total orbitals are within the 3s 3p, and 3d sublevels of the thirdenergy level?A. 8B. 9C. 1D. 4 the table shows the age in years of employees in a compant Which of the diagrams below represents the statement "If it is not warm, thenit is not hot"?not hotnot warmnot warmnot hotFigure AFigure BA. Figure AB. Figure B 4x + 3y - z = -66x - y + 3z = 128x + 2y + 4z = 6 La buena mujer en su casa es reina. Si pone en el marido los ojos descansa en su amor si los vuelve a los hijos, algrate con su virtud y si a sus criados, halla en ellos bueno y fiel servicio, y en la hacienda, provecho y acrecentamiento. (De Fray Luis de Len, en La perfecta casada. Don de lleva punto y coma Is the answer d? If not can someone explain read the excerpt from on women's right to vote and 9th 1873 speech by Susan B Anthony Please answer CORRECTLY !!!!!! Will mark BRAINLIEST !!!!!!!! The social hierarchy that was establish in China by the mongols Please answer correctly !!!!!!!!! Will mark brianliest !!!!!!!!!!!! If you flip three fair coins what is the probability that the two first flips will both be heads, and the third flip will be either heads or tales? Plss help^^This recipe makes three portions of soup.Navina follows this recipe but only wants to make enough for one portion of soup.How much of each ingredient does she need?